Author: leonid
Date: 12:47:55 02/12/01
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On February 12, 2001 at 13:11:53, Heiner Marxen wrote: >On February 12, 2001 at 07:29:02, leonid wrote: > >>Hi! >> >>If you like to solve a mate, try this position: >> >>[D]rQ1Q1rnk/q4qbp/3nQqbB/q1Q1NnNn/5QQ1/b2Q4/1QB3Q1/1K1R3R w - - >> >>Please, indicate your result. >> >>In dispite that this position is not that deep and difficult, if your program >>don't know how to deel with white crowd it could be in serious trouble. My was >>deadly slow in searching for mate even by selective search. Reason - white have >>142 initial moves and goes beyond 150 during the search for mate. Good challenge >>for every chess program! >> >>Thanks for responding, >>Leonid. > >Hmmm, not deep? Not difficult? "There is no mate in 6" by Chest burns >nearly 18 minutes on a K6-3/400 with 50MB hash. I have started depth=7, >but I expect at least 3 hours to complete it, and may be more. >At least I can confirm the 142 initial legal moves. > >Heiner Thanks, Heiner! You are very close! Mine found mate in 8 by selective. It was long. Took 1 min 17 sec. It is simple since there are not that many moves before the mate and starting move (for 8 moves) is checking one. Leonid.
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